... Spacing: 4milSurface Finishing: plating gold (Lead Free)Soldermask: noneLegend: whiteTest: E-testing2> Package & Delivery: Packing details:Heat sealed packing, vacuum packing ... of soldermask10um16Color of silk-screenWhite, Black, Yellow ect.17E-Testing100% E-Testing (High Voltage Testing); Flying Probe Testing 18Other testImpedanceTesting,Resistance ...